Improvement in pumps



ce/ease @met l fue.

THOMAS CHAMBERS, Or ST. LOUIS, MISSOURI.

Y Leemramtlvo. 83,691, zum Nambe 3,1868. 'i l IIWIPIROV'IEEMIIEINT INPUMPS.

The lSchedule referred to in these Lettera` Patent and making of thesame.

To all, whom fit ma/y concern Be' it known that I, THOMAS CHAMBERS, ofthe city and 'county of St. Louis, and State of Missouri,l have inventeda new and useful Improvement in Force-Pumps; and I do hereby declarethat the following is 'a full and clear description thereof, referencebeing had to the accompanying drawings, and to the letters of referencemarked thereon.

The nature of this invention consists in the employment of a smallcylinder and piston, in connectionwith \a larger one, the powerbeingapplied to the smaller pis,-v ton, which is used to force water or otheriluid against the larger piston, or rather against a small auxiliarypiston connected therewith;` the'object being to cause the large pistonto force a large amount of Water,

or other iiuid, from its cylinder, by means of a comparatively smallforce applied to the smaller piston,

and a correspondingly small motion of the latter pis- To enable thoseskilled in the art to make and use my improved pump, I will proceed todescribe its construction and operation.

Figurel of the drawings is a one of the improved pumps;

Figm'e 2 is a sectional elevation of one of the valves.

Figure 3 shows a variation in the form of the valve that may beemployed. A i f A and B are the two large cylinders, 4which are to bejoined together by their ends a b, so as to allow the two pistons A Btowork back and forth in their respective cylinders, and have a commonpiston-rod, O.

-The auxiliary cylinder l), connected with the outer end of the cylinderA, and the cylinder E, connected with the outer end of the cylinder B,are ymuch smaller in diameter, (say one-half,) than the cylinders A B,and they have correspondingly-diminished `pis-' tons 1) E', secured toprolongations of the rod G, which said prolongations of said rod passthrough stuffing-boxesin the heads (l e.

Connected with the outer ends of the cylinders D E, by means of sleevesEF, are forcing-cylinders Fl F, which have pistons F2 F2, worked 'byrods F3 F3.

The spacesbetween the pistons D E andthe heads d e,4 also those betweenthe pistons" A. B and the heads ab, are intended to be air orvacuum-chambers, as may be found most expedient.

Valve-openings d el, either with or without valves, may be suppliedto-either or all of these chambers, as may be desired; also waste-cocksor pipes di e2, for the purpose of drawing off any condensed moisturethat may accumulate therein, or'water that may leak through the packingof the piston or cylinder-head.

rI he induction-pipes G supply water,.or other iluid, to the cylinders AB, and the eduction-pipes G conduct the said fluid therefrom to the'place to which it is tobe forced or elevated. The valves g, used inthese pipes, are of newand peculiar construction.

sectional elevationof The valve-chambers g are hollow spheres, the lowerportions of which form the valve-seats. The valves g consequently thevalve will rest firmly on its seat, no matter if it be turned a littleto one side or Athe other.`

These valves may have a single central stem, g2, to each, the saidstembeing guided by the crossrods g3, or each valve may have wings g forguides, as is shownV in iig. 3.

ation will be as follows; i

The sleeves F F, between vthe pistons F2 Fs and DE',are supposed to beilcd withwater, or some other uid, and one oi" the pistons F2 up, andthe-other one down. These two latter pistons should be connected withthe opposite ends of the same lever, not shown, so that their upward anddownward motions may harmonize with each other in a reciprocatingmanner. When one of the Ypistons F2 is forced down, it will pressthefluid between itand the lpiston adjacent to it, up against the saidpiston, so as to force it back to the other end of its cylinder throughthe vacuum or air-space contained therein. This motion will necessitatea corresponding motion of the pistons A' and B', and consequently theirincreased areawill force a correspondingly large quantity of iuid upthrough the pipes G at each stroke of the pistons. Thus, by theexpenditure of a limited amount of power to the pistons F2, and thatpower applied in a slow time, avery cylinder A orB.

v Although, from the foregoing description, it appears together, thusforming what is usually denominated adoubleacting pump, it is apparentthat one-half 'of the machine thus described may be left olf ifdesirable, and `the'n leave a perfect-working, single-acting pump. Ifthis division of the machine should be made, it will be found necessaryto introduce some spring, or something of the kind into the vacuumend ofthe large cylinder used, so as to force the large piston Aback when itisunloaded.

pose set forth. Y

'THOMAS CHAMBERS.

Witnesses M. RANDOLPH, S. M. RANDOLPH.

are arranged to lit the'- concave seats thus formed, andl vThe pumpconstructed as above desciibed,the operlarge amount of fluid may beforced upward from the that two of the cylinders A B are, or maybe,lused The principal object for which this pump was dev-l briliilding,by a small appliance of power, but

